Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
VoiceMyNote
Do you sing in a choir but can't read notes?
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
39 ratings · Top 5%
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for VoiceMyNote: map the core Music workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Implement advanced search and filter options.
Assumption to check: Difficult to organize and find notes quickly
Validate with people who use this workflow before building.
Hypothesis 2
Add features like speed control and bookmarks.
Assumption to check: Limited playback features
Validate with people who use this workflow before building.
Hypothesis 3
Enable sharing notes with other users.
Assumption to check: Lack of collaboration features
Validate with people who use this workflow before building.
Hypothesis 4
Integrate cloud storage for backups.
Assumption to check: No cloud backup
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Do you sing in a choir but can't read notes? Would you like to hear how a song sounds? Want to map notes to keys on the piano? Want to learn how to read notes? Can you read notes but have problems with the key signatures? Use VoiceMyNote to play notes by tapping on the note sheet on your device. VoiceMyNote will play the note so you can sing it. You will also see where on the Piano that note can be played. Select the Clef and Key you want to play and VoiceMyNote will automatically adjust tapped notes based on key and clef. Tap left to lower the note, tap right to raise it. Choose any of the eight instruments by tapping the piano keyboard in the top left corner. Activate the pitch pipe by tapping the key name. The pitch pipe is also activated when selecting key in settings. It's as simple as that to be able to play sheet music on your iPhone, iPad or iPod touch...
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
@supabase/supabase-js
expo-av
react-navigation
zustand
BUILD KIT DIFFICULTY
Starter
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
